In his Foundation Series, Isaac Asimov prophecizes that democracies have a shelf life of two to three centuries before their societies revert to some kind of oligarchy.
As Umair has alluded, even Ms. Warren has a big challenge to steer her Titanic out of Iceberg Ally. The next populist leader after her (or the next D prez) might make the official switch from democracy to oligarchy.
In the meantime, there is something we can do: build another system of governance: one with any political parties. The parties are the root of our current evils.